Cayman Islands 1996 P-18b PCGS Gem UNC 65 PPQ 10 Dollars (Experimental Paper)
The X/1 prefix on this 10 Dollar note from the 1990s indicates that it was part of a trial run printed on experimental paper. Quietly released into circulation and systematically withdrawn after they were turned in, relatively few have survived, and the number of uncirculated pieces known is extremely small. An important opportunity for the Cayman Islands, Caribbean or Trial Note specialist.